In this paper, we present and defend a natural yet novel analysis of normative reasons. According to what we call support-explanationism, for a fact to be a normative reason to φ is for it to explain why there's normative support for φ-ing. We critically consider the two main rival forms of explanationismought-explanationism, on which reasons explain facts about ought, and goodexplanationism, on which reasons explain facts about goodness-as well as the popular Reasons-First view, which takes the notion of a normative reason to be normatively fundamental. Support-explanationism, we argue, enjoys many of the virtues of these views while avoiding their drawbacks. We conclude by exploring several further important implications: among other things, we argue that the influential metaphor of 'weighing' reasons is inapt, and propose a better one; that, contrary to what Berker (2019) suggests, there's no reason for nonnaturalists about normativity to accept the Reasons-First view; and that, contrary to what Wodak (2020b) suggests, explanationist views can successfully accommodate what he calls 'redundant reasons'.1 Hence, while there are views of normative reasons that sever the seemingly-intimate connection to explanation, we think such views are (other things being equal) at a disadvantage, and engaging with them is beyond the scope of this paper. One example is the view of reasons as premises of good reasoning (see e.g.